//
// Created by 束庆乐 on 2024/12/23.
//
#include "stdio.h"
void swapvalue(int a,int b){
    int tmp = a;
    a = b;
    b = tmp;
}

int main36 (){
    int a = 2;
    int b = 4;
    printf("a==%d  b==%d\n",a,b);
    swapvalue(a,b);
    printf("a==%d  b==%d\n",a,b);
    return 0;
}